Broan HRV200 ECM User manual

INSTALLATION GUIDE
These products earned the ENERGY STAR®by meeting strict energy efficiency guidelines set by Natural
Resources Canada and the US EPA. They meet ENERGY STAR requirements only when used in Canada.
21992 rev. 01
READ AND SAVE THESE INSTRUCTIONS
RESIDENTIAL USE ONLY
! !
VB0185
IMPORTANT NOTES
1. The one and only main wall
control compatible with these
units is the VT9W wall control.
2.Theseunitshaveanewbalancing
procedure, see Section 7.
3.The terminal connectors for
these units are not in the
installation kit; they are already
mounted to their control board.
ERV200 ECM HRV200 ECM
ERV250 ECM HRV250 ECM
Broan-NuTone LLC; Hartford, Wisconsin www.broan.com 800-543-3055
REGISTER YOUR PRODUCT ONLINE AT: www.broan.com/register
For additional information - visit www.broan.com

2
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSON(S) OBSERVE THE FOLLOWING:
1. Use this unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer at the address or
telephone number listed in the warranty.
2. We recommend that your unit be inspected by a specialized technician once a year.
3. Before servicing or cleaning the unit, disconnect power cord from electrical outlet.
4. This unit is not designed to provide combustion and/or dilution air for fuel-burning appliances.
5. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.
6. Do not use the units with any solid-state speed control device other than the corresponding ones listed below:
7. This unit must be grounded. The power supply cord has a 3-prong grounding plug for your personal safety. It must be plugged into a
mating 3-prong grounding receptacle, grounded in accordance with the national electrical code and local codes and ordinances. Do
not remove the ground prong. Do not use an extension cord.
8. Do not install in a cooking area or connect directly to any appliances.
9. Do not use to exhaust hazardous or explosive materials and vapors.
10. When performing installation, servicing or cleaning these units, it is recommended to wear safety glasses and gloves.
11. Due to the weight of the unit, two installers are recommended to perform installation.
12. When applicable local regulations comprise more restrictive installation and/or certification requirements, the aforementioned
requirements prevail on those of this document and the installer agrees to conform to these at his own expenses.
ABOUT THIS GUIDE
Because of the large amount of models covered in this publication, the illustrations are typical ones. Some details of your unit may be
slightly different than the ones shown.
Please take note that this guide uses the following symbols to emphasize particular information:
NOTE: Indicates supplementary information needed to fully complete an instruction.
WARNING
!
Identifies an instruction which, if not followed, might cause serious personal injuries including possibility of death.
CAUTION
Denotes an instruction which, if not followed, may severely damage the unit and/or its components.
ABOUT THESE UNITS
LIMITATION
For residential (domestic) installation only. Installation work and electrical wiring must be done by a qualified person(s) in accordance with
all applicable codes and standards, including fire-rated construction codes and standards.
WARNING
!
CAUTION
1. To avoid prematurate clogged filters, turn OFF the unit during construction or renovation.
2. Please read specification label on product for further information and requirements.
3. Be sure to duct air outdoors – Do not intake/exhaust air into spaces within walls or ceiling or into attics, crawl spaces, or garage.
4. Intended for residential installation only in accordance with the requirements of NFPA 90B (for a unit installed in USA).
5. Do not run any air ducts directly above or closer than 2 ft (0.61 m) to any furnace or its supply plenum, boiler, or other heat producing
appliance. If a duct has to be connected to the furnace return plenum, it must be connected not closer than 9’ 10” from this plenum
connection to the furnace.
6. The ductwork is intended to be installed in compliance with all applicable codes.
7. When leaving the house for a long period of time (more than two weeks), a responsible person should regularly check if the unit
operates adequately.
8. If the ductwork passes through an unconditioned space (e.g.: attic), the ducts must be insulated, and the unit must operate continuously
except when performing maintenance and/or repair. Also, the ambient temperature of the house should never drop below 65°F.
UNIT MAIN CONTROL AUXILIARY CONTROL
ERV200 ECM, ERV250 ECM,
HRV200 ECM, HRV250 ECM VTW9 EXCLUSIVELY VB60W
FOR ASSISTANCE, CALL ON WEEKDAYS, 8:30 AM TO 5:00 PM (EASTERN STANDARD TIME): 1-800-543-3055.
NOTE: THIS PHONE NUMBER IS STRICTLY RESERVED FOR INSTALLERS USE ONLY.Do not call this number for ordering parts.
TECHNICAL SUPPORT

3
TABLE OF CONTENTS
1. S ERVICE PARTS...............................................................................................................................................................4-5
2. AIR DISTRIBUTION ...............................................................................................................................................................6
3. INSTALLATION .................................................................................................................................................................6-12
3.1 INSPECT THE CONTENT OF THE BOX ............................................................................................................................................... 6
3.2 LOCATING THE UNIT ..................................................................................................................................................................6-7
3.3 PLANNING OF THE DUCTWORK ....................................................................................................................................................... 8
3.4 DUCT SIZE ................................................................................................................................................................................ 8
3.5 INSTALLING THE DUCTWORK AND REGISTERS ............................................................................................................................... 8-10
3.6 CONNECTING THE DUCTS TO THE UNIT ..........................................................................................................................................11
3.7 INSTALLING TWO EXTERIOR HOODS .............................................................................................................................................. 12
3.8 CONNECTING THE DRAIN ............................................................................................................................................................ 12
4. CONTROLS..................................................................................................................................................................13-16
4.1 UNITS BOOTING SEQUENCE ........................................................................................................................................................ 13
4.2 WALL CONTROL(S) ELECTRICAL CONNECTION ........................................................................................................................... 13-15
4.3 SETTING UNIT OPERATION IN THE REMAINING 40 MINUTES ON 20 MIN/HMODE AND SETTING UNIT DEFROST CYCLE TYPE
USING VT9W MAIN WALL CONTROL............................................................................................................................................ 16
5. ELECTRICAL CONNECTION TO THE FURNACE ..........................................................................................................................17
6. WIRING DIAGRAM..............................................................................................................................................................18
7. B ALANCING THE UNIT....................................................................................................................................................19-24
7.1 WHAT YOU NEED TO BALANCE THE UNIT ...................................................................................................................................... 19
7.2 PRELIMINARY STAGES TO BALANCE THE UNIT.................................................................................................................................. 19
7.3 USING MAGNEHELIC GAUGES....................................................................................................................................................... 19
7.4 BALANCING CHART AND PRESET SPEEDS TABLE ........................................................................................................................ 19-20
7.5 BALANCING PROCEDURE ........................................................................................................................................................ 21-24
8. TROUBLESHOOTING.......................................................................................................................................................25-27

4
1. SERVICE PARTS
VL0071
B
C
D
EF
GH
I
J
K
L
N
D
O
M

5
1. SERVICE PARTS (CONT’D)
NO.DESCRIPTION QTY. ERV200 ECM HRV200 ECM ERV250 ECM HRV250 ECM
1BRACKET KIT 1 SV63419 SV63419 SV63419 SV63419
2DAMPER SYSTEM ASSEMBLY
(INCLUDING 2 PLASTIC SCREWS)1 SV63420 SV63420 SV63420 SV63420
3BLOWER ASSEMBLY
(INCLUDING 3 PLASTIC SCREWS)2 SV63421 SV63421 SV63421 SV63421
4HRV CORE FILTER (PAIR) 1 SV63426 SV63426
ERV CORE FILTER (PAIR) 1 SV63433
5HEAT RECOVERY CORE 1 SV63422 SV63423
ENERGY RECOVERY CORE 1 SV63425
6DOOR ASSEMBLY
(INCLUDING NO. 16) 1 SV63569 SV63569 SV63569 SV63569
7R
IGHT PANEL 1 SV63565 SV63566 SV63567 SV63568
8ERVC
ORE FILTER (PAIR) 1 SV63427
9E
NERGY RECOVERY CORE 1 SV63424
10 DAUGHTER BOARD
(INCLUDING INO. 11) 1 SV63437 SV63437 SV63437 SV63437
11 PCB CONNECTOR
(MAIN CONTROL)1 SV63434 SV63434 SV63434 SV63434
12 PCB CONNECTOR
(AUXILIARY CONTROL)1 SV63435 SV63435 SV63435 SV63435
13 PCB
(INCLUDING NOS. 10 &12) 1 SV63436 SV63441 SV63442 SV63443
14 TRANSFORMER 1 SV63438 SV63438 SV63438 SV63438
15 WARM SIDE THERMISTOR KIT* 1 SV62481 SV62481 SV62481 SV62481
16 DOOR MAGNETIC SWITCH* 1 SV19060 SV19060 SV19060 SV19060
17 PLASTIC SCREW (SET OF 6)* 1 SV63439 SV63439 SV63439 SV63439
18 HARDWARE KIT* 1 SV22488 SV22488 SV22488 SV22488
* Not shown.
REPLACEMENT PARTS AND REPAIR
In order to ensure your ventilation unit remains in good working condition, you must use the Broan-Nutone LLC genuine replacement parts only. The Broan-NuTone LLC genuine
replacement parts are specially designed for each unit and are manufactured to comply with all the applicable certification standards and maintain a high standard of safety. Any
third party replacement part used may cause serious damage and drastically reduce the performance level of your unit, which will result in premature failing. Broan-NuTone LLC
recommends to contact a BRoan-NuTOne LLC certified service depot for all replacement parts and repairs.

6
2. AIR DISTRIBUTION
NORMAL OPERATION DEFROST OR RECIRCULATION
VF0063
STALE AIR
TO OUTDOORS
FRESH AIR
FROM OUTDOORS
STALE AIR
FROM BUILDING FRESH AIR
TO BUILDING
STALE AIR
FROM BUILDING
FILTERED AIR
TO BUILDING
3.2 LOCATING THE UNIT
Choose an appropriate location for the unit.
• Within an area of the house where the ambient temperature is kept
between 50°F and 104°F.
• Away from living areas (dining room, living room, bedroom), if possible.
• So as to provide easy access to the interior of the unit, for regular and
annual maintenance.
NOTE: There must be a 27” clearance in front of the unit to fully open
the door. In limited space, the door can be removed by lifting it
up, but there must be a 18” clearance in front of the unit to
remove the core.
• Close to an exterior wall, so as to limit the length of the insulated flexible
duct to and from the unit.
• Away from hot chimneys and other fire hazards.
• Allow for a power source (standard 3-prong grounding outlet).
• Close to a drain. If no drain is close by, use a pail to collect run-off.
The unit can be hung using provided 4 chains and springs (see at right) or
hung to the wall using provided brackets (see next page).
3. INSTALLATION
3.1 INSPECT THE CONTENT OF THE BOX
Inspect the exterior of the unit for shipping damage. Ensure that there is no damage to the door, ports, power cord, etc.
CAUTION
In every case, make sure the unit is level.
VD0378
UNIT HUNG BY CHAINS AND SPRINGS

7
A
3.2 LOCATING THE UNIT (CONT’D)
3. INSTALLATION (CONT’D)
UNIT HUNG TO WALL BRACKET
Trace a level line on the wall; align the wall bracket (the longer
one) to the line and secure this bracket to the wall using 4 provided
screws (1½” long) and washers, if using the slots on bracket).
VD0379
LEVEL LINE WALL BRACKET
VD0380
Using 1½” long provided screws, assemble both spacers to left and
right back bottom corner of the unit.
B
WARNING
!
Ensure the wall bracket is attached to all of the
available studs, not into the drywall alone.
Lift the unit and hang it to the wall bracket. Ensure the bracket
assembled on back of the unit rests on the wall bracket.
VO0271
VO0272
Secure the unit to the wall using one 1½” long provided screw
through the small bracket.
CAUTION
Never use an electric screwdriver or
drill to screw the brackets to the unit;
use a standard screwdriver.
VR0086
VD0392
Using 3/8” long provided screws, mount the other bracket (A) to the
back of the unit; start with the 4 back screws, then 2 screws on top
left and right sides, then use the last center one to assemble the
last small bracket (B).
NOTE: These screws must be hand tightened.

8
3. INSTALLATION (CONT’D)
3.3 PLANNING OF THE DUCTWORK
• Keep it simple. Plan for a minimum of bends and joints.
• Keep the length of insulated and non-insulated ducts to a minimum, because the length of the ductwork impacts directly the unit
airflow performances.
• Do not ventilate crawl spaces or cold rooms. Do not attempt to recover the exhaust air from a dryer or a range hood.This would cause
clogging of the filters and recovery module.
• If the house has two floors or more, be sure to plan for at least one exhaust register on the highest lived-in level.
3.4 DUCT SIZE
To determine the appropriate duct size to be used, refer to the ASHRAE or HRAI HANDBOOK. Below is an example of a design
for a fully ducted system with a unit having a high speed performance of 160 cfm.
VI0019
4" Ø, 47 CFM
5" Ø, 93 CFM
5" Ø, 67 CFM
4" 4" 4" 4"
4"
4" 4"
5"
5" 5"
5"
6" 6"
6" Ø, 160 CFM 6" Ø, 160 CFM
5" Ø, 86 CFM
5" Ø, 62 CFM
4" Ø, 24 CFM
4" Ø,
37 CFM
4" Ø,
46 CFM
5" Ø,
74 CFM
3.5 INSTALLING THE DUCTWORK AND REGISTERS
3.5.1 FULLY DUCTED SYSTEM
Stale air exhaust ductwork
• Install the stale air exhaust registers where the contaminants are produced: kitchen, living room, etc. Position the registers as far
from the stairway as possible and in such a way that the air circulates in all the lived-in spaces in the house.
• If a register is installed in the kitchen, it must be located at least 4 feet from the range.
• Install the registers 6 to 12 inches from the ceiling on an interior wall OR install them in the ceiling.
• If possible, measure the velocity of the air flowing through the registers. If the velocity is higher than 400 ft/min, then the register
type is too small. Replace with a larger one.
Fresh air distribution ductwork
• Install the fresh air distribution registers in bedrooms, dining rooms, living room and basement.
• Keep in mind that the fresh air registers must be located as far as possible from the stale air registers.
• Install the registers either in the ceiling or high on the walls with air flow directed towards the ceiling. (The cooler air will then cross
the upper part of the room and mix with room air, before descending to occupant’s level.)
• If a register must be floor installed, direct the airflow up the wall.
WARNING
!
Never install a stale air exhaust register in a closed room where a combustion device operates, such as a gas
furnace, a gas water heater or a fireplace.

9
3. INSTALLATION (CONT’D)
3.5 INSTALLING THE DUCTWORK AND REGISTERS (CONT’D)
3.5.2 CENTRAL DRAW POINT SYSTEM
Stale air exhaust ductwork
Same as for Fully Ducted System, described on point 3.5.1
Fresh air distribution ductwork
• There are 2 methods for connecting the unit to the furnace/air handler:
Method 1: Supply side connection
• Cut an opening into the furnace supply duct at least 18 inches from the furnace/
air handler.
• Connect this opening to the Fresh air distribution port of the unit (use metal
duct, see figure at right).
• Make sure the unit duct forms an elbow inside the furnace/air handler ductwork.
• If desired, interlock (synchronize) the furnace/air handler blower operation (see
Section 5 ELECTRICAL CONNECTION TO THE FURNACE).
Method 2: Return side connection
• Cut an opening into the furnace return duct not less than 10 feet from the furnace/
air handler (A+B).
• Connect this opening to the Fresh air distribution port of the unit (see figure at
right).
NOTE: For Method 2, it is not essential that the furnace/air handler runs when the
unit is operation, but we recommend it. If desired, interlock (synchronize)
the furnace/air handler blower operation (see Section 5 ELECTRICAL
CONNECTION TO THE FURNACE).
WARNING
!
When performing duct connections, always use approved tools and materials. Respect all corresponding laws and
safety regulations. Please refer to your local building code.
CAUTION
When performing duct connections to the furnace supply duct, this duct must be sized to support the additional
airflow produced by the unit. Also, the use of metal duct is highly recommended.
VJ0128
METAL DUCT
MINIMUM 18"
B
A
VJ0129
A+B = NOT LESS
THAN 10’

10
3. INSTALLATION (CONT’D)
3.5 INSTALLING THE DUCTWORK AND REGISTERS (CONT’D)
3.5.3 SIMPLIFIED INSTALLATION
There are 2 methods for connecting the unit to the furnace/air handler:
Method 1: Supply-return connection Method 2: Return-return
WARNING
!
When performing duct connections, always use approved tools and materials. Respect all corresponding laws and
safety regulations. Please refer to your local building code.
CAUTION
When performing duct connections to the furnace supply duct (Method 1), this duct must be sized to support the
additional airflow produced by the unit. Also, the use of metal duct is highly recommended. For a Return-return
installation, the furnace blower must be in operation when the unit is in operation.
VJ0130
A
B
METAL DUCT
A+B = NOT LESS
THAN 10’
MINIMUM 18"
B
A
VJ0131
MINIMUM 3' A+B = NOT LESS
THAN 10’
Stale air intake
• Cut an opening into the furnace/air handler return duct not less than 10 feet from the furnace/air handler (A+B).
• Connect this opening to the Exhaust air from building port of the unit.
Fresh air distribution
• Same instructions as for Method 1 or Method 2, Section 3.5.2.
For Method 2 (Return-return), make sure there is a distance of at least 3 feet between the 2 connections to the furnace/air handler.
NOTE: For Method 1, it is not essential to synchronize the furnace blower operation with the unit operation, but we recommend it.
CAUTION
If using Method 2, make sure the furnace/air handler blower operation is synchronized with the unit operation!
See Section 5.

11
3. INSTALLATION (CONT’D)
3.6 CONNECTING THE DUCTS TO THE UNIT
NOTE: All unit ports are were created to be connected to ducts having a minimum of 6”diameter, but if need be, they can be connected
to bigger sized ducts by using an appropriate transition (e.g.: 6” diameter to 7” diameter transition).
Insulated flexible ducts
Use the following procedure to connect the insulated flexible ducts to the ports of the unit (Exhaust air to outdoors and Fresh air
from outdoors ports).
CAUTION
If ducts have to go through an unconditioned space (e.g.: attic), always use insulated ducts.
Pull back the insulation to expose the flexible duct.
Attach the flexible duct to the port using tie wrap.
Pull the insulation over the joint and tuck in between the inner and outer rings of the double collar.
Pull down the vapor barrier (shaded part in illustrations below) over the outer ring to cover it completely. Fasten in place the vapor
barrier using the port strap (included in unit parts bag). To do so, insert one collar pin through vapor barrier and first strap hole,
then insert the other collar pin through vapor barrier and center strap hole and close the loop by inserting the first collar pin in the
last strap hole.
CAUTION
Make sure the vapor barrier on the insulated ducts does not tear during installation to avoid condensation within
the ducts.
VJ0132
12 3 4
Non-insulated rigid ducts
Use metal screws and duct tape to connect the rigid ducts to the
unit ports.
Non-insulated flexible ducts
Use tie wraps to connect the flexible ducts to the unit ports.
VJ0133
COLLAR PINS
STRAP

12
3. INSTALLATION (CONT’D)
3.7 INSTALLING TWO EXTERIOR HOODS
Choose an appropriate location to install the exterior hoods:
• There must be a minimum distance of 6 feet between
the hoods to avoid cross-contamination.
• There must be a minimum distance of 18 inches from
the ground.
Refer to figure at right for connecting insulated ducts to the
exterior hoods.An “Anti-gust intake hood’’ should be installed
in regions where a lot of snow is expected to fall.
WARNING
!
Make sure the intake hood is at least 6 feet away
from any of the following:
• Dryer exhaust, high efficiency furnace vent,
central vacuum vent
• Gas meter exhaust, gas barbecue-grill
• Any exhaust from a combustion source
• Garbage bin and any other source of
contamination.
3.8 CONNECTING THE DRAIN
CAUTION
A drain tubing (included) must be installed for all HRV units. For ERV units, it is not required, however, it is
recommended for climates where the outdoor temperature typically remains below -13°F, (over a 24-hour period)
for several days in a row, combined with an indoor humidity of 40% or higher.
VO0273A
16"
(406 mm)
16"
(406 mm)
Cut 2 sections of the plastic tube, at least 16” long, and attach them
to each inner drain fitting, located under the unit.
Join both short sections to the “T” junction and main tube as shown.
VD0387
DRAIN PLUG LOCATIONS
NOTE: For ERV units installed in cold climate, remove both drain
plugs inside the unit prior to install tubing.
VD0337A
± 1”
TIE WRAP
Make a water trap loop in the tube to prevent the unit from
drawing unpleasant odors from the drain source. Make sure this
loop is located OVER the “T” as shown. Run the tube to the floor
drain or to an alternative drain pipe or pail.
IMPORTANT
If using a pail to collect water, locate the tube end approximately
1” from the top of the pail in order to prevent water from being
drawn back up into the unit.
VD0028
EXHAUST HOOD
INTAKE HOOD
TAPE AND DUCT TIE
18"
6'
18"
18"
6'
6" Ø
OPTIONAL DUCT
LOCATION

13
4. CONTROLS
4.1 UNIT BOOTING SEQUENCE
The unit booting sequence is similar to a personnal computer boot sequence. Each time the unit is plugged after being unplugged, or after
a power failure, the unit will perform a 30-second booting sequence before starting to operate.
During the booting sequence, the unit is checking and resetting the motorized damper position.
Once the motorized damper position completely set, the booting sequence is done.
NOTE: No command will be taken until the unit is fully booted.
WARNING
The VT9W wall control is the only main wall control compatible to your unit. Never attempt to install another wall
control model. Always disconnect the unit before making any connections. Failure to disconnect power could
result in electric shock or damage to the wall control or electronic module inside the unit.
CAUTION
Failure to comply with the following can cause erratic operation of the unit and/or the wall control:
Never install more than oneVT9W main wall control per unit. Make sure that the wires do not short-circuit between
themselves or by touching any other components on the wall control. Avoid poor wiring connections. To reduce
electrical interference (noise) potential, do not run wall control wiring next to control contactors or near light
dimming circuits, electrical motors, dwelling/building power or lighting wiring, or power distribution panel.
4.2 WALL CONTROL(S) ELECTRICAL CONNECTION
!
Unplug the unit from power source. Open the side panel to access terminal blocks
(Ais the one for main control connection only and Bis the one for auxiliary controls). Pull
out from the unit board the needed connector(s).
AB
VE0351
Run the end of the control wire(s) through the grommet located on the unit wall. Refer to
illustration at right (side panel removed to ease understanding).
VD0381
GROMMET

14
4. CONTROLS (CONT’D)
4.2 WALL CONTROL(S) ELECTRICAL CONNECTION (CONT’D)
Strip the end of the main control cable to access the 4 wires.
Strip the end of each wire.Using a small flat blade screwdriver,
connect each wire to its corresponding terminal, by referring
on the sticker affixed on the unit: YELLOW wire to “Y”, BLACK
wire to “B”, RED wire to “R” and GREEN wire to “G”.
VE0352
4.2.1 TERMINAL BLOCK(S) CONNECTION
MAIN CONTROL TERMINAL BLOCK
Strip the end of the auxiliary control cable to access the wires.
Strip the end of 3 wires.Check if all wiresarecorrectlyinserted in
theircorrespondingholesintheterminalblock.(Awireiscorrectly
inserted when its orange receptacle is lower than another one
without wire. On illustration below, wire Ais correctly inserted,
but wire Bis not.)
VE0353
A
B
AUXILIARY CONTROL TERMINAL BLOCK
When stripping the wires, ensure to remove only the necessary
lenght of sheat in order to prevent short circuits.
VE0354
RIGHT WRONG
Once the terminal block(s) connections have been made, reinstall it (them)
on the unit PC board. Refer to illustration at right (side panel removed to ease
understanding). Close the side panel.
NOTE: For information about the operation of the wall controls, refer to their
installation sheet.
VE0355

15
4. CONTROLS (CONT’D)
4.2 WALL CONTROL(S) ELECTRICAL CONNECTION (CONT’D)
CONT
When used, the VB60W activation will override the main control operation, as well as the unit
defrost cycle. On example shown on the left, the unit was in CONT mode when the auxiliary
control was activated; so the actual operation mode stays on VT9W main wall control screen,
but the chronometer icon appears as long as the VB60W is activated.
NOTE: In colder regions, the chronometer icon may stay after the end of the VB60W cycle,
due to defrost cycle.
4.2.2 ELECTRICAL CONNECTION TO VB60W OPTIONAL AUXILIARY CONTROL(S)
VE0349
Up to five (5) VB60W auxiliary controls can be installed.

16
4. CONTROLS (CONT’D)
4.3 SETTING UNIT OPERATION IN THE REMAINING 40 MINUTES ON 20 MIN/HMODE AND SETTING UNIT DEFROST CYCLE TYPE
USING VT9W MAIN WALL CONTROL
Press and hold the
MODE key for 3 seconds.
MODE
3 sec.
Two lines are flashing
to show Standby
(default configuration
setting).
The LCD screen will show one of these configurations:
OR
CONT
Recirculation arrows
are turning, rE
flashes and CONT
label appears to show
RECIRCULATION on
low speed.
OR
TURBO
Recirculation arrows
are turning, rE
flashes and TURBO
label appears to show
RECIRCULATION on
high speed.
MODE
TURBO
OR
Use MODE or TURBO key to
see all 3 configurations.
% HUM
Press % HUM key to accept chosen
configuration and go to setting defrost
cycle type.
The LCD screen will show one of these defrost cycle types:
Sd (Standard)
(factory defrost cycle setting).
When needed, the unit will
perform defrost cycle on high
speed.
NOTE: This is the defrost type
used for the data published by
HVI and ENERGY STAR®.
OR
PL (Plus)
Use this cycle in cold region
(outdoor temperature -17°F and
lower). When needed, the unit
will perform defrost cycle on
high speed on a longer period
of time.
OR
dI (Discretion)
When needed, the defrost cycle
will be performed on the same
speed than the unit ventilation
speed. (e.g.: if the unit is set on
TURBO, the defrost cycle will
be done on high speed, and
if the unit is set on CONT, the
defrost cycle will be done on
low speed.
MODE
TURBO
OR
Use MODE or TURBO key
to see all 3 defrost cycle type.
% HUM
Press % HUM key to accept
chosen defrost cycle type and
go to software version display
LCD screen alternates between the
house with circled arrows and the house
without arrow. The numbers under the
house are the software version number.
Press % HUM key OR
wait 10 seconds to exit
user setting menu.
% HUM

17
5. ELECTRICAL CONNECTION TO THE FURNACE
WARNING
!
Never connect a 120-volt AC circuit to the terminals of the furnace interlock (standard wiring). Only use the low
voltage class 2 circuit of the furnace blower control.
For a furnace connected to a cooling system:
On some older thermostats, energizing the “R” and “G” terminals at the furnace has the effect of energizing “Y” at the thermostat and
thereby turning on the cooling system. If you identify this type of thermostat, you must use the ALTERNATE FURNACE INTERLOCK WIRING.
STANDARD FURNACE INTERLOCK WIRING ALTERNATE FURNACE INTERLOCK WIRING
W
Y
R
G
Y
C
UNIT TERMINAL CONNECTOR
THERMOSTAT
TERMINALS
COOLING SYSTEM
NO C NC I OC OL
WRGY
W
R
Y
R
G
Y
C
THERMOSTAT
TERMINAL
4 WIRES
2 WIRES
heating only
FURNACE
24-VOLT
TERMINAL BLOCK 2 WIRES COOLING SYSTEM
NO
NC
C
UNIT TERMINAL CONNECTOR
VE0350A
NO C NC I OC OL
WRGY
4 WIRES
2 WIRES
heating only
FURNACE
24-VOLT
TERMINAL BLOCK
2 WIRES
LOW VOLTAGE
CLASS 2
LOW VOLTAGE
CLASS 2

18
6. WIRING DIAGRAM
120 V, 60 Hz W1
J5
J4
ELECTRONIC
ASSEMBLY
1
2
3
1
2
3
1234
12
12345
J8
J9
J11
J10
12
12345
J12
J13
J14
6
5
4
3
2
1
B
24 V
class 2
9.5 V
class 2
120V, 60Hz
Neutral
120 V, 60Hz
Line
CPU
K2
K4
K5
J5-2
J10-1J10-2
Line voltage factory wiring
Class 2 low voltage factory wiring
Class 2 low voltage field wiring
See note 1
120 V
neutral
1234512
12
J3
J2 J1
t˚
Damper motor
B
Override
switch
Furnace blower interlock
J14-1: NO
J14-2: COM
J14-3: nc
(optional; see notes 3 & 5)
DAMPER
ELECTRONIC ASSEMBLY
Defrost
temperature sensor
WIRING DIAGRAM LOGIC DIAGRAM
Exhaust
fan motor
Supply
fan motor
J5-1
J5-3
J7-2
J7-1
J4-1
J4-3
J6-2
J6-1
K1
K3
K2
24 V
class 2
9.5 V
class 2
120 V
neutral
J9-1
J9-2
J9-3
J4-2
J9-4
J8-1
J8-2
J8-4
J8-5
K4 J12-2
J12-1
A1
Damper motor
J3-2
J3-1
J2-2
J2-1
F1
J12-5
J12-4
J12-3 J2-3
J2-4
J2-5
J11-2
J11-1
K1
K3
K5 J14-3
J14-1
J14-2
Furnace
blower
interlock
(optional; see
notes 3 & 5)
J14-4
J14-5
J14-6
Override
switch
(optional; see
notes 3 & 4)
Field wiring
remote control
(see notes 3 & 4)
BDM
B
Y
R
G
B
W
BR
BR
G
BR
BR
Y
Y
BW
A2
A2
M3
T1
R1
A1
F1
(optional; see
notes 3 & 4)
VE0346A
Critical characteristic.
JU1
123
MED HI
321
HI MED
JU1
NOTES
1. Use specified UL listed/CSA Certified line fuse
(3A, 3AG Type).
2. If any of the original wire, as supplied, must
be replaced, use the same equivalent wire.
3. Field wiring must comply with applicable
codes, ordinances and regulations.
4. Remote controls (class 2 circuit) available,
see instruction manual.
5. Furnace fan circuit must be class 2 circuit only.
COLOR CODE
B BLACK
BL BLUE
BR BROWN
GGREEN
RRED
WWHITE
Y YELLOW
nc no connection
B
to A1-J12
Class 2
low voltage
factory wiring
to
A2-J2
12345
J15
Y
BL
R
W
nc
12345
J17
Y
BL
R
W
nc
From
supply motor
control cable
From
exhaust motor
control cable
Exhaust fan motor
M1
G
Y
BL
R
W
Control cable
Power cable
to A1-J17
Supply fan motor
M2
G
Y
BL
R
W
Control cable
Power cable
to A1-J15
to A1-J17
to A1-J15
12345
J15
nc
12345
J17
nc
From
supply motor
From
exhaust moto
r
W W
Door interlock switch
(magnetically actuated S1
reed switch)
BL
BL
J2
J3
A3
Field wiring
remote control
(see notes 3 & 4)
4
3
2
1
Door interlock switch
J3-1
A3 J16
J3-2
J3-3
J3-4
J2
J16
J20
t˚
Thermistor
R2
12
• Risk of electric shocks.Before performing any maintenance or servicing,always disconnect the unit from its power source.
• This product is equipped with an overload protection (fuse). A blown fuse indicates an overload or a short-circuit situation.
If the fuse blows, unplug the product and check the polarity and voltage output from the outlet. Replace the fuse as per the
servicing instructions (refer to wiring diagram for proper fuse rating) and verify the product. If the replaced fuse blows, it may
be a short-circuit and the product must be discarded or returned to an authorized service center for examination and/or repair.
WARNING
!

19
7. BALANCING THE UNIT
7.1 WHAT YOU NEED TO BALANCE THE UNIT
• One VT9W main wall control close to the unit.
• A magnehelic gauge capable of measuring 0 to 0.5 inch of water (0 to 125 Pa) and 2 plastic
tubes.
• The balancing chart of the unit.
7.2 PRELIMINARY STAGES TO BALANCE THE UNIT
• Seal all the unit ductwork with tape. Close all windows and doors.
• Turn off all exhaust devices such as range hood, dryer and bathroom fans.
• Make sure all filters are clean (if it is not the first time the unit is balanced).
NOTE: Make sure that the furnace/air handler blower is ON if the installation is in any way connected to the ductwork of the cold air
return. If not, leave furnace/air handler blower OFF.
7.3 USING MAGNEHELIC GAUGES
VP0009
HIGH
LOW
FRESH AIR FLOW
HIGH
LOW
STALE AIR FLOW
VP0027A
1. Place the magnehelic gauge on a level surface and adjust it to zero.
2. According to the airflow to be measured, connect tubing from gauge
to STALE air flow or FRESH air flow pressure taps (see illustration at
right).
Be sure to connect the tubes to their appropriate high/low fittings. If
the gauge drops below zero, reverse the tubing connections.
7.4 BALANCING CHART AND PRESET SPEEDS TABLE
The unit balancing chart and the unit preset speed table are affixed on the unit, behind the
right panel (circled area on illustration at right).
VD0388

20
7. BALANCING THE UNIT (CONT’D)
7.4 BALANCING CHART AND PRESET SPEEDS TABLE (CONT’D)
Use the balancing chart to convert pressure (in. w.g.) values read from magnehelic gauge to airflow (CFM) values. While balancing,
the VT9W wall control screen shows which pressure taps have to be used. See example below.
FLOW FRESH STALE
CFM IN. W.G.IN. W.G.
120 0.71 0.73
125 0.67 0.70
130 0.63 0.67
135 0.59 0.64
140 0.55 0.61
145 0.51 0.58
150 0.47 0.55
UNIT BALANCING CHART
Plug magnehelic gauge
tubing to STALE airflow.
Plug magnehelic gauge
tubing to FRESH airflow.
STALE reading value with
its corresponding CFM
FRESH reading value with
its corresponding CFM
NOTE: The unit is considered balanced even if there is a difference of ± 10 CFM (or ± 5 L/s or 17 m³/h) between the two airflows.
PRESET SPEEDS TABLE
The special design of these units, combined with the VT9W main wall control, offer many preset speeds ranges according
to the unit models.
See preset speeds table example below.
UNIT MODEL
PRESET
SPEEDS NO.HIGH SPEED
(CFM@ 0.4 IN. W.G.)
LOW SPEED
(CFM@ 0.2 IN. W.G.) 20/40/60 MIN.
CONTROL STALE AIR
(CFM@ 0.4 IN. W.G.)
RECIRCULATION SPEED
(CFM@ 0.4 IN. W.G.)
__ From 60 to 250
From 30 CFM to
75% of adjusted
TURBO speed
From 60 to 250 From 60 to 250
01 250 125 250 250
02 225 110 250 225
03 200 100 250 200
04 175 85 225 175
05 150 75 200 150
06 125 60 175 125
07 100 50 150 100
08 This speed must be used for HVI testing at 64 CFM @ 13°F (-25°C)
09 This speed must be used for HVI testing at 98 CFM @ 13°F (-25°C)
CONT
TURBO
This manual suits for next models
7
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